PIC16F883 Microchip Technology Inc., PIC16F883 Datasheet - Page 44

• Manufacturer Part Number: PIC16F883
• Description: 28/40/44-pin Flash-based, 8-bit Cmos Microcontrollers With Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

PIC16F882/883/884/886/887
3.2.3
Each PORTA pin is multiplexed with other functions. The
pins and their combined functions are briefly described
here. For specific information about individual functions
such as the comparator or the A/D Converter (ADC),
refer to the appropriate section in this data sheet.
FIGURE 3-1:
DS41291D-page 42
PIN DESCRIPTIONS AND
DIAGRAMS
Data Bus
PORTA
PORTA
TRISA
TRISA
Note 1:
WR
WR
RD
RD
BLOCK DIAGRAM OF RA0
D
D
ANSEL determines Analog Input mode.
CK
CK
Q
Q
Q
Q
To Comparator
To A/D Converter
Preliminary
Input Mode
Analog
(1)
3.2.3.1
Figure 3-1 shows the diagram for this pin. This pin is
configurable to function as one of the following:
• a general purpose I/O
• an analog input for the ADC
• a negative analog input to Comparator C1 or C2
• an analog input for the Ultra Low-Power Wake-up
0
1
+
-
ULPWUE
RA0/AN0/ULPWU/C12IN0-
I
ULP
V
SS
V
TRG
© 2007 Microchip Technology Inc.
V
V
DD
SS
I/O Pin